Mogens Kjaer wrote:
Chris Jones wrote:
...
for the profiler output. atan2 is taking 50% of the time of this
method. Not here I don't need that much precision on the result - say
+- O(2*pi/100).
Can't you use a Taylor expansion of arctan?
In a word, NO. Taylor's series are TERRIBLE ways to do numerical
approximations. In effect, they make an infinitely precise estimate
at the expense of everything else. You want an approximation which
is valid over an interval.
Mike
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